Windsurf vs Aider: what developers actually say
Based on 70 opinions on Hacker News from developers who discussed these two, most of them first-hand users.
The two are close: Aider's approval is 60 against Windsurf's 58, and Aider holds the only explicit preference, 1 to 0. Aider's strongest signals are code quality (5 positive, 1 negative) and large codebases (3 positive, 1 negative). Windsurf's strongest signal is UX (4 positive, 2 negative), but it has 0 positive and 3 negative reliability mentions and several quota and pricing complaints. Pick Windsurf for an editor-based workflow with tab completion and model choice; pick Aider for terminal work and large repositories, if API token costs are acceptable.
When developers explicitly said they prefer one or switched: 0 picked Windsurf, 1 picked Aider.
Choose Windsurf if
- Want an editor-based workflow
- Value tab completion and model choice
- Accept quota and pricing risk
Choose Aider if
- Work from a terminal
- Care about code quality on large repositories
- Can absorb API token costs
Where each one wins and loses
Why developers switched
Picked Windsurf
No explicit switches recorded.
Picked Aider
Summaries are paraphrased. Each links to the original comment.